Communications: Farraday bag with walkie talkies inside, whistles, flags and handsignals are good too, have a morse code sheet thats laminated. You can use flashlights to communicate too. With morse or colors... There used to be these periscope-shaped flashlights at the Military surplus store that had different color filters/lenses that you could screw on the end. Definitely want a multiple band radio— as many bands as possible... keep that bitch in a farraday bag, too.

Communications: Farraday bag with walkie talkies inside, whistles, flags and handsignals are good too, have a morse code sheet thats laminated. You can use flashlights to communicate too. With morse or colors... There used to be these periscope shaped flashlight at the Military surplus store that had different color filters/lenses that you could screw on the end. Definitely want a multiple band radio— as many bands as possible... keep that bitch in a farraday bag, too.